Carbon holder for writing machines



Feb. 20, 1951 K. FLEISCHMANN 2,542,495

CARBON HOLDER FOR WRITING MACHINES Filed May 6., 194a 2 Sheets-Sheet 1 Feb. 20, 1951 K. FLEISCHMANN CARBON HOLDER FOR WRITING MACHINES 2 Sheets-Sheet 2 Filed May MMM M Patented Feb. 20, 1 951 CARBON HOLDER FOR WRITING MACHINES Lester K. Fleischmann, Chicago, Ill., assignor to Standard Manifold Company, Inc., a corporation of Illinois Application May 6, 1948, Serial No. 25,495

This invention relates to a carbon-holding attachment for the carriage of writing machines such as typewriters, billing machines, and the like, and more particularly to a device wherein carbon holding blades are supported cantileverwise on fixed posts.

As is well known in the art, fanfolded continuous form stationery has superposed strips connected to the adjacent strips at one edge, and it is difiicult to insert fresh carbon in the conventional carbon holders without opening the connections. One object of the present invention is to avoid such difficulties. While the invention has particular utility when used in connection with fanfold stationery, it may also be used with ordinary continuous form manifold stationery where the strips are not connected.

3 Claims. (Cl. 197-126) The primary object of the invention is to provide an improved carbon holder which may be used to anchor carbon strips in fanfold stationcry, and will enable the blades to be shifted laterally so that fresh carbon may be introduced.

' Another object of the invention is to provide a simple shiftable support for a carbon blade, whereby the blades may be shifted individually and turned slightly about the posts, to facilitate changing carbon strips without removing the blades from the posts.

Still another object of the invention is to provide a simple locking device, on each post, for releasably securing the blades in verticaly aligned operative position.

' The invention is illustrated in a preferred embodiment in the accompanying drawings, in

which- Figure 1 is a front elevational view of adevice embodying the invention; Fig. 2, a plan view of the same, with dotted lines indicating how the stationery is advanced through the device; Fig. 3, a transverse elevational view of the device; Fig. 4, a vertical sectional view, taken as indicated at line 4-4 of Fig. 2; Fig. 5, a perspective view of one of the carbon-holding blades; Fig. 6, a vertical sectional view, taken as indicated at line B@ of Fig. 1; and Fig. '7, a fragmentary sectional view, taken as indicated at line 1-1 of Fig. 1.

In the embodiment illustrated, a conventional base member 8, in the form of an inverted U- shaped channel, is provided with the usual studs 9 for attachment to a carbon holder carriage of well known construction. A pair of posts I!) and H are secured to the base by means of screws l2. Each of the posts is provided with a vertical series of spaced transversely extending slots or grooves 43 which are adapted to receive and support carbon-holding blades 14.

Each of the carbon blades I4 is provided with 'iii an elongated slot l5 which terminates near the center of the blade in a fan-shaped opening l6,

top of one of the posts and the narrow slot I5 brought into engagement with a pair of opposed grooves. Preferably, the blade has a forwardly extending slotted member I! through which the end of a strip of carbon or the tail of a carbon pack may be inserted and held in interleaved relation with stationary drawn forwardly between the posts II] and l I, as indicated by the arrows in Fig. 2.

In order to hold the blades in vertically aligned operative position, a simple locking device is provided on each post. The device may be in the form of a pin having a shank IS with a head 19 adapted to rest on a perforate bracket 20 extending rearwardly from the post. Each of the blades It has a perforation 2|, and a perforation may also be provided in the base member 8. When the blades are properly inserted and aligned, the shank of the pin may be inserted through the holes in the blades.

As it is impractical to extend the anchored portion of a carbon strip all the way to the connected edge of a fanfold strip, it is preferred to incline the carbon holding blades l4 about five degrees from a line extending between the posts. This is done most easily by having the posts inclined slightly to the rear from a vertical plane between them.

In using the device, the blades can first be.

removed by means of the slots 16, and a fanfold strip of stationery placed between the posts. The lowermost blade may then be placed back on the post, a strip of carbon attached to the member ll, and the next connected strip laid over the blade. Another blade is then attached to the opposite post, the carbon strip attached, and this procedure is followed until the carbon blades and carbon strips are interleaved between each of the forms. After an advance set of forms has been filled in, in the writing machine, the record forms are held and the carbons retracted by means of the device to the succeeding set of forms. When it becomes desirable to replace a carbon strip, the locking pin is removed and the blade pulled outwardly along the slot l5, so that the member I! is readily accessible. After the new strip of carbon has been attached, the blade may be pushed back into operative position and locked by the pin. While only three blades are illustrated, it will be understood that additional ones may be used in order to supply carbon for each record copy.

The foregoing detailed description i iven for clearness of understanding only, and no unnecessary limitations should be understood therefrom, for some modifications will be obvious to those skilled in the art.

I claim:

1. A carbon-holding device, adapted to be so that the opening it may be slipped over the mounted on the traveling carriage of a writing machine, comprising: a base member provided with a pair of spaced upwardly extending posts between which stationery strips maybe led, said posts bein provided on opposite sides with verti- 3. A device as specified in claim 1, in which the slot ineaph blade terminates in an enlarged fan- "shaped opening near the center or the blade whereby said blade may be turned on the post cal series of transversely extending blade-holding 5 to facilitate att hment of a trip of carbon to grooves; and a plurality of carbon-holding blades, each of said blades having a transversely extending slot to receive one of said posts and support said blade cantileverwise in a pair of opposed grooves in said post.

2. A device as specified in claim 1, in which the transversely extending slot in each blade terminates in an enlarged openin near the center of the blade whereby the blade may be slipped over the, post. i

,.theb1ade- LESTER K. FLEISCHMANN.

'B EFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name Date Br mhill Mar. 14,1944

Number 

